Ok.
Then answer the question I posed.
Jim...BTW, If you use the simplified estimate, lets say it is 7 knots for example,
Does your boat move in a current of bow opposing 7 knot river flow?
what are you talking about?
- Thread starter jon hansen
- Start date
Then answer the question I posed.
Neither "tunnage" nor "tonnage" ever had, nor has, anything to do with weight. The word "tun" was originally a size of a cask used to ship wine from Spain & Portugal to England. In 1347 a tax of 3 shillings per tun was imposed and this was called "tonnage." A ship's size became known by the number of casks it could carry, and the word "tunnage" (which evolved into "tonnage") started being used to describe a ship's size.
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It doesn't look like anyone will come up with the answer to the vessel on which the first flushing marine toilet was found. It was the Civil War Union ironclad Monitor.
Before the Civil War, only the rich owned flush toilets. On a ship, you used either a slop bucket or a hole in the edge of an upper deck. But most of the low-lying Monitor, crew included, rode below the waterline. It had a serious waste-disposal problem: Toilets depend on gravity, and gravity can do little good below water. Waste had to be forced out.
The Monitor's designer, Swedish engineer John Ericsson, had one of the most restlessly inventive minds of the 19th century. He solved the problem by creating a kind of mini-torpedo tube. After a sailor used the toilet, he had to close a near valve, open a far valve, then actuate a pump to drive the waste out--a design very similar to toilets still used on submarines today. The toilet wasn't Ericsson's only unique invention on the Monitor...the first rotating gun turret was another. They're all described in really interesting article here:
The Monitor's Flush Toilet
Before the Civil War, only the rich owned flush toilets. On a ship, you used either a slop bucket or a hole in the edge of an upper deck. But most of the low-lying Monitor, crew included, rode below the waterline. It had a serious waste-disposal problem: Toilets depend on gravity, and gravity can do little good below water. Waste had to be forced out.
The Monitor's designer, Swedish engineer John Ericsson, had one of the most restlessly inventive minds of the 19th century. He solved the problem by creating a kind of mini-torpedo tube. After a sailor used the toilet, he had to close a near valve, open a far valve, then actuate a pump to drive the waste out--a design very similar to toilets still used on submarines today. The toilet wasn't Ericsson's only unique invention on the Monitor...the first rotating gun turret was another. They're all described in really interesting article here:
The Monitor's Flush Toilet
Well, that’s one down. Or, was it number two down?
Almost right.... or should I say that is part of the correct answer. The amplitude does increase but it is the wavelength increasing until your boat is sitting in the trough of the wave that makes it exponentially harder to go any faster. When you get your boat to plane, you are driving the boat up on top of the bow wave. Displacement boats do not have the power or hull design to accomplish that. I used to own a MacGregor 22 that I could sometimes plane on a run. I would pull the keel up, and run wing-on-wing in a stiff breeze and if white caps were breaking, I could sometimes get up on top of a breaking wave for a few moments and the boat would zoom. I once read 11 knots on my gps.TRUE
I haven't seen an answer to this... Wish I had a pencil, it's a lot easier to draw than explain in words, but here goes. In a displacement hull as you go faster, you start to form a sine wave shaped form of the water under your boat. The top of the sine wave is up near the bow, and the low part of the sine wave is towards the stern. As you approach and exceed your hull speed, the shape of that sine wave increases in amplitude, or the height of the front part gets higher and the low part gets lower. So you boat basically starts going up hill more and more. The stern drops down, the bow goes up, and all you do is burn more fuel, make more noise...etc...
dj
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Why do you dock in a slip but slip on a dock?
Do you tie one on or tie your boat off?
If you head into the wind and go to the head are you then peeing into the wind?
Don't you have to make way before you can give way?
-Will (Dragonfly)
Hmmmm?
I will clarify...
Does your boat move[Change its Lon/Lat Position] in a current of bow opposing 7 knot river flow?
____
Now think a bit before answering since about 3 responders told you the answer, which may not be YES/NO.
Jim...
More trivia
Where did the word starboard come from.... you can see the answer in these photographs.
Where did the word starboard come from.... you can see the answer in these photographs.
YESHmmmm?
I will clarify...
Does your boat move[Change its Lon/Lat Position] in a current of bow opposing 7 knot river flow?
____
Now think a bit before answering since about 3 responders told you the answer, which may not be YES/NO.
Jim...
Starboard derives from the Old English steorbord, meaning the side on which the ship is steered. Before ships had rudders on their centrelines, they were steered with a steering oar at the stern of the ship and, because more people are right-handed, on the right-hand side of it.
(I cheated...I googled the answer)
(I cheated...I googled the answer)
Peggie gets the gold star... okay only bronze because she looked it up... And you can see the steering rudder in this viking replica
Steer Board side of the ship... became sta'board. And you did not dock on the steerboard side because you might damage the oar. So port was the opposite of steer board side of the boat.
Steer Board side of the ship... became sta'board. And you did not dock on the steerboard side because you might damage the oar. So port was the opposite of steer board side of the boat.
jssailem
SBO Weather and Forecasting Forum Jim & John
- Oct 22, 2014
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